Very cool life, wow. Yes, audio (music in particular) is a great integrator.
I'm also a musician, semi-pro (meaning I get paid decent money for playing and recording, but it's my avocation, not my primary profession). I'm in a local rock band that plays a few times a month, and in addition to playing guitar and singing (backup), I run the 24-channel soundboard from the stage.
Being able to blend music and electronics is heaven. even if it does sometimes feel like I'm a one-armed paperhanger with a ringing cellphone in my pants pocket!
SONAR is cool stuff. I consulted for a year for a bioacoustics researcher doing whale soundings with hydrophones; that's about the closest I've come to that area. Fascinating area.
Musician, eh? If you ever get to listen to a pair of Event Opals (Studio Monitor of the Decade - Sound on Sound magazine) you get to listen to my work...;) They’ve won about every award possible, in just 18 months.